﻿using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace Lite.ExcelLibrary.BinaryFileFormat
{
    public partial class FONT : Record
    {
        public FONT(Record record) : base(record) { }

        public FONT()
        {
            this.Type = RecordType.FONT;
        }

        /// <summary>
        /// Height of the font (in twips = 1/20 of a point)
        /// </summary>
        public Int16 Height;

        /// <summary>
        /// Option flags
        /// </summary>
        public UInt16 OptionFlags;

        /// <summary>
        /// Colour index
        /// </summary>
        public UInt16 ColorIndex;

        /// <summary>
        /// Font weight (100-1000). Standard values are 0190H (400) for normal text and 02BCH
        /// (700) for bold text.
        /// </summary>
        public UInt16 Weight;

        /// <summary>
        /// Escapement type: 0000H = None
        /// 0001H = Superscript
        /// 0002H = Subscript
        /// </summary>
        public UInt16 Escapement;

        /// <summary>
        /// Underline type: 00H = None
        /// 01H = Single 21H = Single accounting
        /// 02H = Double 22H = Double accounting
        /// </summary>
        public Byte Underline;

        /// <summary>
        /// Font family: 00H = None (unknown or don't care)
        /// 01H = Roman (variable width, serifed)
        /// 02H = Swiss (variable width, sans-serifed)
        /// 03H = Modern (fixed width, serifed or sans-serifed)
        /// 04H = Script (cursive)
        /// 05H = Decorative (specialised, for example Old English, Fraktur)
        /// </summary>
        public Byte Family;

        /// <summary>
        /// Character set (used by all cell records containing byte strings)
        /// </summary>
        public Byte CharacterSet;

        public Byte NotUsed;

        /// <summary>
        /// Font name
        /// </summary>
        public String Name;

        public override void Decode()
        {
            MemoryStream stream = new MemoryStream(Data);
            BinaryReader reader = new BinaryReader(stream);
            this.Height = reader.ReadInt16();
            this.OptionFlags = reader.ReadUInt16();
            this.ColorIndex = reader.ReadUInt16();
            this.Weight = reader.ReadUInt16();
            this.Escapement = reader.ReadUInt16();
            this.Underline = reader.ReadByte();
            this.Family = reader.ReadByte();
            this.CharacterSet = reader.ReadByte();
            this.NotUsed = reader.ReadByte();
            this.Name = this.ReadString(reader, 8);
        }

        public override void Encode()
        {
            MemoryStream stream = new MemoryStream();
            BinaryWriter writer = new BinaryWriter(stream);
            writer.Write(Height);
            writer.Write(OptionFlags);
            writer.Write(ColorIndex);
            writer.Write(Weight);
            writer.Write(Escapement);
            writer.Write(Underline);
            writer.Write(Family);
            writer.Write(CharacterSet);
            writer.Write(NotUsed);
            Record.WriteString(writer, Name, 8);
            this.Data = stream.ToArray();
            this.Size = (UInt16)Data.Length;
            base.Encode();
        }

    }
}
